DevOps – Page 5 – ITFROMZERO

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Deploy KVM ‘Lightning Fast’ with virt-install: Forget the GUI, CLI is King

By admin June 14, 2026

Learn how to use virt-install to deploy KVM virtual machines via the command line. A detailed guide from basic setup to automation with Cloud-init for Linux admins.

Docker

Running GUI Applications in Docker: An A-Z Guide to X11 Forwarding

By admin June 14, 2026

Learn how to run graphical applications (GUI) like Firefox and GIMP in Docker on Linux. Detailed guide on X11 Forwarding, GPU optimization, and container security.

Security

Secure Internal Dashboards with OAuth2 Proxy: Block Unauthorized Access in a 15-Minute Setup

By admin June 14, 2026

Don't leave your internal dashboards passwordless! Detailed guide on using OAuth2 Proxy to add a Google/GitHub authentication layer in just 15 minutes.

Docker

Speed Up Docker Pulls with Registry Mirror and Pull-through Cache: Fix for Slow International Connections

By admin June 13, 2026

A step-by-step guide to setting up a Docker Registry Mirror and Pull-through Cache to speed up image pulls, bypass Docker Hub rate limits, and save bandwidth for your entire team. Covers self-hosting an internal mirror with Docker Registry v2 and a production-ready HTTPS configuration.

Docker

Docker Log Rotation: The Ultimate Guide to Preventing Full Server Disks for DevOps

By admin June 13, 2026

Don't let your server crash due to log bloat! Here is a detailed guide on configuring Docker Log Rotation, limiting log file sizes, and quick fixes for when your disk hits 100%.

MySQL

How to Use MySQLTuner to Diagnose and Quickly Optimize MySQL Server Configuration

By admin June 13, 2026

MySQLTuner is a Perl script that analyzes your running MySQL configuration and delivers specific optimization recommendations in just a few minutes. This guide walks through installation, interpreting the output, and applying key settings like innodb_buffer_pool_size and thread_cache_size in practice.

Docker

Build Your Own GitHub Actions Runner with Docker: Fast, Secure, and 100% Cost-Effective

By admin June 11, 2026

Build your own GitHub Actions Runner with Docker to save costs, speed up builds, and gain full control over your CI/CD infrastructure. A practical guide.

Ubuntu

Guide to Building a Centralized Syslog Server: Consolidating Logs with Rsyslog and Logrotate

By admin June 11, 2026

Centralized log management is a must-have skill for SysAdmins. Learn how to configure Rsyslog and Logrotate on Ubuntu to gather logs from multiple servers efficiently and securely.

Linux

Managing /etc Configuration with etckeeper: A Safety Net for Every SysAdmin

By admin June 10, 2026

Stop worrying about misconfiguring system files. Learn how to use etckeeper to manage /etc with Git, allowing you to track history and restore Linux configurations in seconds.

Docker

Podman Desktop: A Smooth, Secure, and Lightweight Docker Desktop Alternative

By admin June 10, 2026

Podman Desktop is the perfect Docker Desktop alternative: free, lightweight, and more secure with rootless mode. See our detailed guide for Windows and Linux.